/* Shared Design System & Variables */
:root {
    /* Fluent UI Colors */
    --colorNeutralBackground1: #ffffff;
    --colorNeutralBackground2: #faf9f8;
    --colorNeutralBackground3: #f3f2f1;
    --colorNeutralForeground1: #323130;
    --colorNeutralForeground2: #605e5c;
    --colorNeutralForeground3: #8a8886;
    --colorNeutralStroke1: #edebe9;
    --colorNeutralStroke2: #e1dfdd;

    /* Brand Colors */
    --colorBrandBackground: rgb(51, 65, 85);
    --colorBrandForeground: #ffffff;
    --colorAccent: rgb(255, 197, 38);
    --colorAccentHover: rgb(255, 187, 20);
    --colorError: rgb(172, 0, 39);

    /* Spacing (4px base unit) */
    --spacing-xs: 4px;
    --spacing-s: 8px;
    --spacing-m: 16px;
    --spacing-l: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 40px;

    /* Typography */
    --fontFamilyBase: 'Segoe UI', 'Segoe UI Web (West European)', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', sans-serif;
    --fontSizeBase: 14px;
    --fontSizeSmall: 12px;
    --fontSizeMedium: 16px;
    --fontSizeLarge: 20px;
    --fontSizeXLarge: 24px;
    --fontSizeXXLarge: 28px;
    --fontWeightRegular: 400;
    --fontWeightSemibold: 600;
    --fontWeightBold: 700;

    /* Shadows */
    --shadow2: 0 1.6px 3.6px rgba(0, 0, 0, 0.13), 0 0.3px 0.9px rgba(0, 0, 0, 0.11);
    --shadow4: 0 3.2px 7.2px rgba(0, 0, 0, 0.13), 0 0.6px 1.8px rgba(0, 0, 0, 0.11);
    --shadow8: 0 6.4px 14.4px rgba(0, 0, 0, 0.13), 0 1.2px 3.6px rgba(0, 0, 0, 0.11);
    --shadow16: 0 12.8px 28.8px rgba(0, 0, 0, 0.13), 0 2.4px 7.2px rgba(0, 0, 0, 0.11);

    /* Border Radius */
    --radiusSmall: 2px;
    --radiusMedium: 4px;
    --radiusLarge: 8px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--fontFamilyBase);
    font-size: var(--fontSizeBase);
    font-weight: var(--fontWeightRegular);
    background: var(--colorNeutralBackground2);
    color: var(--colorNeutralForeground1);
    min-height: 100vh;
    padding: 0;
    line-height: 1.5;
}

/* Common Components */
.btn {
    padding: var(--spacing-s) var(--spacing-m);
    border: none;
    border-radius: var(--radiusMedium);
    font-size: var(--fontSizeBase);
    font-weight: var(--fontWeightSemibold);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--colorBrandBackground);
    color: var(--colorBrandForeground);
}

.btn-primary:hover {
    background: rgb(40, 52, 68);
    box-shadow: var(--shadow2);
}

.btn-secondary {
    background: var(--colorNeutralBackground3);
    color: var(--colorNeutralForeground1);
    border: 1px solid var(--colorNeutralStroke2);
}

.btn-secondary:hover {
    background: var(--colorNeutralStroke1);
    box-shadow: var(--shadow2);
}

/* Modals – centered horizontally and vertically when visible */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal[style*="display: flex"],
.modal.is-open {
    display: flex !important;
}

.modal-content {
    background: var(--colorNeutralBackground1);
    padding: var(--spacing-m);
    border-radius: var(--radiusLarge);
    box-shadow: var(--shadow16);
}

/* Edit Request modal: fit on desktop, 2 columns, scrollable overflow */
.edit-request-modal-content {
    max-width: 960px;
    max-height: 90vh;
    text-align: left;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.edit-request-form-scroll {
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    min-height: 0;
}

.edit-request-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 5px;
}

@media (min-width: 600px) {
    .edit-request-form {
        grid-template-columns: 1fr 1fr;
    }
    .edit-request-form .form-group-span-2 {
        grid-column: 1 / -1;
    }
}

.edit-request-modal-actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    flex-shrink: 0;
}

/* Payment form modal (Reimbursement / Pay Vendor): fit on desktop, 2 columns, scrollable */
.payment-form-modal-content {
    max-width: 640px;
    max-height: 90vh;
    text-align: left;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.payment-form-scroll {
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    min-height: 0;
}

.payment-form {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 520px) {
    .payment-form {
        grid-template-columns: 1fr 1fr;
    }
    .payment-form .form-group-span-2 {
        grid-column: 1 / -1;
    }
}

.payment-form-modal-actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    flex-shrink: 0;
}